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For Insects, Spiders & Their Kin
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Species Exema canadensis

Warty Leaf Beetle - Exema canadensis Chrysomelidae, lateral - Exema canadensis Chrysomelidae, larva in pooh case - Exema canadensis Exema? - Exema canadensis Exema? - Exema canadensis Warty Leaf Beetle - Exema canadensis Warty Leaf Beetle - Exema canadensis Exema canadensis
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Cryptocephalinae (Case-bearing Leaf Beetles)
Tribe Fulcidacini (Warty Leaf Beetles)
Genus Exema
Species canadensis (Exema canadensis)
Explanation of Names
Exema canadensis Pierce, 1940
Numbers
9 spp. n. of Mex. (1)
Size
2.4 to 2.7 mm (2)
Identification
Emargination of eyes black, not yellow. (2)
"Shiny black with yellowish markings; male with antennal scape and longitudinal bar next to each eye transversely connected to central spot that merges with triangular frontal spot, yellow; frontal slope black; all tibiae with subbasal and subapical yellow rings; front femora with basal yellow ring, female similar with facial yellow markings reduced to spots; pronotum with large elliptical punctures, largest posteriorly; elytra coarsely punctate with prominent umbone and large tubercules." (2)
Range
e NA (TX-FL-NS-MB) (1)
Habitat
Beaten and swept from species of Solidago, Corylus, Salix, Cornus, elm, chokecherry, blackberry, ragweed, and others. (2)
Print References
Karren, J. 1966. A revision of the genus Exema of America north of Mexico (Chrysomelidae, Coleoptera). University of Kansas Science Bulletin 46: 647–695.(3)
Pierce, W.D. 1940. The fauna and flora of the El Segundo sand dunes. II. The dune case-bearer beetles of the genus Exema with review of the genus. Bulletin, Southern California Academy of Sciences 39: 6-27.
Works Cited
1.Catalog of Leaf Beetles of America North of Mexico
Ed Riley, Shawn Clark, and Terry Seeno. 2003. Coleopterists Society.
2.The Beetles of Northeastern North America, Vol. 1 and 2.
Downie, N.M., and R.H. Arnett. 1996. The Sandhill Crane Press, Gainesville, FL.
3.A revision of the genus Exema of America, north of Mexico (Chrysomelidae, Coleoptera)
J.B. Karren. 1966. University of Kansas Science Bulletin, 46:647-695.